[feature] automated strategy: add days to remaining term

In the automated custom strategy you can select the minimal remaining term for a Note to be eligible to be included. The current selection has only an option to set months (from 1 to 72 months).

There are LO's that list short term loans from just a bit more than 30 days.

With using a remaining term of 1 month, most of the Notes do not meet the requirement of the automated strategy. With a remaining term setting of 0 months, all notes qualify including the ones that have 1 or a few days left.

It would be great if it would also be possible to base the remaining term on days. For instance to be able to specify to have a remaining term of 15 or 20 days.